[Bug 1887655] Re: unattended-upgrades triggers reboot despite configuration

[Andy Kasp]

As this is server such thing is quite unbelievably bad, is then the only
way in production to remove this package altogether. Its not ideal for
Ubuntu reputation for servers indeed.

** Changed in: unattended-upgrades (Ubuntu)
       Status: Expired => New

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Title:
  unattended-upgrades triggers reboot despite configuration

Status in unattended-upgrades package in Ubuntu:
  New

Bug description:
  I've been having problems with my Ubuntu machine suddenly rebooting
  without any warning.  To my knowledge Ubuntu Desktop is not supposed
  to reboot without warning by default.

  I believe this is being triggered by unattended-upgrades

  unattended-upgrades 2.3 (amd64)

  Ubuntu Desktop:
  Description:	Ubuntu 20.04 LTS
  Release:	20.04

  One pattern that emerges is that the reboot happens right after
  unattended-upgrades completes successfully. There are multiple
  examples in my /var/log/syslog, but all show "unattended-
  upgrades.service: Succeeded." the same second everything begins to
  shut down, with nothing for a minute or two prior. Example:

  Jul 15 11:17:01 pc systemd[2065]: Starting Notification regarding a new release of Ubuntu...
  Jul 15 11:17:14 pc charon: 08[IKE] sending keep alive to 10.10.10.10[4500]
  Jul 15 11:17:22 pc check-new-release-gtk[71843]: /usr/lib/ubuntu-release-upgrader/check-new-release-gtk:30: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk'
  , '3.0') before import to ensure that the right version gets loaded.
  Jul 15 11:17:22 pc check-new-release-gtk[71843]:   from gi.repository import Gtk
  Jul 15 11:17:22 pc check-new-release-gtk[71843]: WARNING:root:timeout reached, exiting
  Jul 15 11:17:22 pc systemd[2065]: update-notifier-release.service: Succeeded.
  Jul 15 11:17:22 pc systemd[2065]: Finished Notification regarding a new release of Ubuntu.
  Jul 15 11:17:48 pc mysql-workbench[33350]: gtk_tree_view_unref_tree_helper: assertion 'node != NULL' failed
  Jul 15 11:17:54 pc charon: 09[IKE] sending keep alive to 10.10.10.10[4500]
  Jul 15 11:18:03 pc systemd[1]: unattended-upgrades.service: Succeeded.
  Jul 15 11:18:03 pc systemd[1]: Stopping Session 3 of user philip.
  Jul 15 11:18:03 pc systemd[1]: Removed slice system-clean\x2dmount\x2dpoint.slice.
  Jul 15 11:18:03 pc systemd[1]: Removed slice system-getty.slice.
  Jul 15 11:18:03 pc systemd[1]: Removed slice system-modprobe.slice.
  Jul 15 11:18:03 pc systemd[1]: Stopped target Block Device Preparation for /dev/mapper/ubuntu.
  Jul 15 11:18:03 pc systemd[2065]: Stopped target GNOME Wayland Session (session: gnome).

  From memory I've never edited the contents of /etc/apt/apt.conf.d/ and
  the configuration for unattended upgrades claims to be default (NOT to
  reboot):

  $ grep -irnC4 reboot /etc/apt/apt.conf.d/
  /etc/apt/apt.conf.d/50unattended-upgrades-88-// Do automatic removal of unused packages after the upgrade
  /etc/apt/apt.conf.d/50unattended-upgrades-89-// (equivalent to apt-get autoremove)
  /etc/apt/apt.conf.d/50unattended-upgrades-90-//Unattended-Upgrade::Remove-Unused-Dependencies "false";
  /etc/apt/apt.conf.d/50unattended-upgrades-91-
  /etc/apt/apt.conf.d/50unattended-upgrades:92:// Automatically reboot *WITHOUT CONFIRMATION* if
  /etc/apt/apt.conf.d/50unattended-upgrades:93://  the file /var/run/reboot-required is found after the upgrade
  /etc/apt/apt.conf.d/50unattended-upgrades:94://Unattended-Upgrade::Automatic-Reboot "false";
  /etc/apt/apt.conf.d/50unattended-upgrades-95-
  /etc/apt/apt.conf.d/50unattended-upgrades:96:// Automatically reboot even if there are users currently logged in
  /etc/apt/apt.conf.d/50unattended-upgrades:97:// when Unattended-Upgrade::Automatic-Reboot is set to true
  /etc/apt/apt.conf.d/50unattended-upgrades:98://Unattended-Upgrade::Automatic-Reboot-WithUsers "true";
  /etc/apt/apt.conf.d/50unattended-upgrades-99-
  /etc/apt/apt.conf.d/50unattended-upgrades:100:// If automatic reboot is enabled and needed, reboot at the specific
  /etc/apt/apt.conf.d/50unattended-upgrades-101-// time instead of immediately
  /etc/apt/apt.conf.d/50unattended-upgrades-102-//  Default: "now"
  /etc/apt/apt.conf.d/50unattended-upgrades:103://Unattended-Upgrade::Automatic-Reboot-Time "02:00";
  /etc/apt/apt.conf.d/50unattended-upgrades-104-
  /etc/apt/apt.conf.d/50unattended-upgrades-105-// Use apt bandwidth limit feature, this example limits the download
  /etc/apt/apt.conf.d/50unattended-upgrades-106-// speed to 70kb/sec
  /etc/apt/apt.conf.d/50unattended-upgrades-107-//Acquire::http::Dl-Limit "70";

  journalctl -u unattended-upgrades

  Jul 10 07:52:31 PC systemd[1]: Started Unattended Upgrades Shutdown.
  Jul 14 10:03:03 PC systemd[1]: unattended-upgrades.service: Succeeded.
  -- Reboot --
  Jul 14 10:04:11 PC systemd[1]: Started Unattended Upgrades Shutdown.
  Jul 15 11:18:03 PC systemd[1]: unattended-upgrades.service: Succeeded.
  -- Reboot --
  Jul 15 11:19:10 PC systemd[1]: Started Unattended Upgrades Shutdown.

  It's not clear to me what other information I can offer to help.

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